Hi,

I noticed that the higher timeframe charts display incorrect prices. 
e.g. 4 Hour chart for NDX--X displays wrong prices whereas the 1 min chart displays the correct real-time price.

I have seen this for multiple symbols.

Is this a temporary issue or when will this get fixed?

(are the higher timeframe charts displaying delayed prices instead of real-time?)

Regards

It sounds like you are using Heiken-Ashi candle plot style. That data is derived data, not the actual prices.

http://www.investopedia.com/terms/h/heikinashi.asp

If you change to another plot style you will see the prices as they are reported.

Thanks!

These were on the Heiken-Ashi charts.

But, isn't the current-price (white rectangle on the right side) displayed independent of the chart type?

i.e. the chart-type will determine the candles being drawn but the current price should be displayed separately?

The white rectangle displays the latest price on the chart, so if the chart is using Heiken-Ashi you'll get the latest calculated price.

(Don't mean to dwell on this topic but just trying to understand what the white rectangle displays)

Is the white rectangle not intended to display the current price for the symbol (regardless of chart-type)? The current price cannot be a calculated value.

For Heikin-Ashi, only the  {Close, Open, High, Low} of the candle are calculated values. The current price is not calculated.

Thanks.

No, it's not, it displays the latest price on the chart.  The close or "last" price of the most recent candle is the latest/current price as far as the chart is concerned. And for every plot style except HA candles, that will match what is displayed on the scale.